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Surprisingly, 28 cold PSIs worked on almost all the tires I had at the track. I typically start with 28psi and maybe lower the front pressures about 1 psi if I feel some understeer due to excessive heat up front (especially on a hot day).
34-36 hot PSI seemed like the sweet spot also for many tires (same with RE71Rs)
Another reason why I am very skeptical of running tires like Cup 2s since the target PSIs seemed to low.At rennlist forums people claim that they're happy with 30-32 hot PSI . In order to achieve those targer PSIs, starting PSIs should be at around 25-26 (or even less maybe) and I wouldn't feel confident running the pressures that low on a heavier car like a Camaro. I know that it caused TPMS issues on the previous Gen Camaros and the guy who brought his GT350 almost had bald tires after one event and maybe 500 miles on them (first trip to ORP and first ever event)
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